I've often been concerned about this as well. Part of it is feeling immense guilt over the possible damage it might cause other innocent people in the aftermath- crime scene cleaners, random civilians, emergency service personnel. I think it's perhaps why I've been particularly drawn to less grisly or public methods, in prior attempts.
I once did the math on how long it might take before my body would be found in a public restroom on campus, having crammed myself into the final stall furthest from the door, on an ill used floor in a quiet building- in hopes that it would be too late to be revived once found, and that the low foot traffic would mean no one would have the unfortunate random encounter of my corpse flopped on the ground.
I'd thought about how to washi tape up a note to secure it on the stall's outside, to warn someone who did stumble across the scene to not open the door, and call for cleanup: but ultimately decided that the watchman on that particular patrol was far too likely to find me: and he was a kind man. I didn't want to give him any lingering nightmares or to torment himself over what he could have possibly done- had he walked his route a little faster, if he had asked how I was doing and really listened the last we spoke- that sort of thing. I'd hate to hurt someone else in alleviating my own pain.
The other reason is I am disquieted at the indignity of bodies in death- incontinence and the slightly absurd possibility of rigor mortis trapping me in a ridiculous, or stupid final pose particularly bother me. Not much one can do about that, though.